Car-truck bolster



UNETED STATES PATENT FFIQE.

EDWARD F. GOLTRA AND MORSE B. SCHAFFER, OB ST. LOUIS, MISSOURI.

CAR-TRUCK BOLSTER.

SPEGIFIGATION forming part of Letters Patent N0. 504,029, dated. August 29, 1893.

Application filed J'anuary 21, 1393. .Serial N0. 459,219. (N0 model.)

T0 all whom zlt mooy concern:

Be it known that we, EDWARD F. GOLTRA and MORSE B. SOHAFFER, of the city of St. Louis, State of Missouri, have invented a new and useful Improvement in Oar-Truck B01- sters, of which the following is a full, elear, and exact desoription.

Our invention relates to cast car truck bolsters, and it consists substantially as hereinafter sei: forth and clain1ed, aided by the annexed drawings, making part of this specification, in which Figure'l is a view in perspective showing our improved bolster in its preferred shape; and Fig. II a side elevation of the bolster, a portion 0f one end thereof being broken away, and at that point the bolster is shown in vertical, longitudinal section.

The sarne letters and numerals 0f reference denote the same parts.

Referring to the drawings, 1 represents the bolster-top 0r web, 2 the ende, and. 3 the sides. The sides 3 ab theirlower edges are preferably made arched er convex, to forrn a truss for strengthening the beam to bettet sustain the weight of the ear and it's contents. The sides extend above the top at a. 4 is a circular bearing plate around the hing holt opening 5, and 6 are bearing plates for the car body.

On the sides 3 are guides 7, between which the supporting pillars fit.

8 are bosses with openings 9, fron1 which the hangers or the brake shoes are supported.

10 represents bosses on the inner, under side of the bolster web, where the car springs are adapted to be seated, to hold the springs in place.

The prime object of our invention is to form a practical casttruck bolster with its appurtenances cast thereon, so as 130 avoid the use of bolts, rivets 01 separate pieces, and thereby form a truck bolster that is substantially integral throughout, and alrnost impossible to become deranged. orimpaired through the displacement of any of itsparts. By means cf a bolster constructed. in accordance with our invention, the car springs are well placed in osition, and by using an inverted channel spring plank, such as now employed, the springe are supported securely.

12 represents integral ribs connecting the sides 3, and one er more of which may be used.

We have shoWn two, one near each end of the bolster. Said ribs extend crosswise in the bolster at a point or points between its ends and connect the web and sic'les (orgirders as they may be in difierently terrned) integrally. Such cross rib may extend entirely across from side to side, 0r it may assume the forn1 of eorner pieces er brackets ab the opposite side corners respectively o1 the bolster, and, in such cases, serve to connect the sidesindirectly with the aid of the central portion of the connecting web. But in all eases the sides and web are connected integrally. They furtheimore serve to prevent the deformation of the bolster in use and also to support the web which in turn usually supports the center am]. side bearings. They are also of use metallurgically in that in casting the bolster they serve, when the bolster is cooling, to hold the sides vertical, and to preve'nt thern from Haring and warping out of shape. They further assist, when arranged. as shown, and in coujunction with the ends 2, in forming pockets for holding the springs, obviatingif desired, the use of spring plates. These cross ribs for the purposes named, are useful irrespective of the exact location of the bolster web. This last named part, the web, we however prefer to connect With the bolster sides below the top thereof, and for the following reasons: Our bolster being a casting, and usually 0E steel, a certain amount of the material of the walls of the mold. isabraded in founding and floats, and is earried. to the top cf themold, and were it not that the sides cf the bolster are extended above the j unetion of the dies with the web, the structure would be materially weakcned atsuch junetion. That important part of the structure would be formed partly of the scoria referred to. Bub by extending the sides above the web, room is provided for fioating the scoria well above the junction of the sicles and web. Moreover, the extension of thesides above the web materiallystrengthens and benefits the strueture, and. the lower the web the deeper can be the transom used in conjunction with the bolster. Said sideextension can also be notched, as shown, to receive and hold in place the top arch-bar. In case of the acoidental displacement of the cartruck, the bolstersides would reoeive the shock of the falling car bodyrather than the web. F01 the purposes named the web ean be 301ned to the sides at any suitable point below the top of seid sides. We prefer the arrangement shown.

We claim* 1. In a car truek bolster, the eombination )f a. web and girders, seid web and girders be- 1ng east in one piece, and said web being wholly er part1y below the top of seid girders.

2. In a ear truek bolster, the combination of a web and sides, said web and sides being east in one piece, a.nd said bolster having integral side-bearings, and said sides being united beueath the tops of said side-bearings by means of said web.

3. In a car truck bolster, the combination of a web and girders, seid web and girders, a:

a point er points between the ends of the bolster, having integral cross-ribs, substantially as deseribed.

4:. In a car truck bolster, the combination of a web and sides, seid bolster having center and side-bearinge, said sides, wholly er in pa1t; throughout their length, extending above said web, seid sides, a1; a. point er points between the ende of the bolster, being eonneeted by eross-ribs with said web, and said sides, web, bearings and ribs being an integral casting.

EDWARD F. GOLTRA. MORSE B. SCHAFFER.

In presenee of- ALBERT M. EBERSOLE, E. S. KNIGHT. 

